Variables and Expressions
Presentation
•
Mathematics
•
University
•
Practice Problem
•
Medium
Standards-aligned
Kylie Paluck
Used 130+ times
FREE Resource
5 Slides • 3 Questions
1
Variables and Expressions
2
Learning Objective
I can write an algebraic expression for a word phrase, I can write a word phrase for an algebraic expression.
3
Lesson Vocabulary
Quantity- anything that can be measured or counted.
Variable-is a symbol, usually a letter, that represents the value(s) of a variable quantity.
Algebraic Expression- is a mathematical phrase that includes one or more variables.
Numerical Expression- is a mathematical phrase involving numbers and operation symbols, but no variables.
4
Essential Understanding
Algebra uses symbols to represent quantities that are unknown or that vary. You can represent mathematical phrases and real-world relationships using symbols and operations
5
Basic Math Terminology
+ Addition- Add, Sum, Plus, Increase,
- Subtraction, Subtract, Minus, Less, Difference,Decrease, Take Away, Deduct
× Multiplication, Multiply, Product, Times
÷ Division, Divide, Quotient, Goes Into, How Many Times
6
Multiple Choice
Which expression represents
the product of 16 and a number, m?
16 + m
16 - m
16m
16/m
7
Multiple Choice
Which expression represents five times
the difference of a number, n and 3?
5n - 3
5 ( n - 3 )
3 - 5n
5 - n - 3
8
Multiple Choice
The sum of seven and x
7x
7/x
7-x
7+x
Variables and Expressions
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